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Michelin brand is up to you--lots of good input on tire brands from current post on this forum. My 2003 also came with 295/75r. I have used both 295/80r and 11r tires on my coach since the OEMs. These sizes are slightly larger in diameter so both speedometer and odometer are off--figure 3 MPH on speedometer and 5% on odometer [miles]. Am told Cummins can adjust engine ECM to accommodate larger dia. tires but have never bothered. RPMs are perhaps 100 lower based on displayed speed. Don't see any issues with slightly larger tires.
PS--the next step down is the 275/80r which is a considerably smaller tire in stance and appearance--not recommended--IMHO....

Correct as to the 295 and 275 being the same height...40.3 vs 40.2 respectively. The 275 is 20mm narrower. Both sizes will scale the same weight in either G - 6175 @ 110 psi and H- 7160@120. Using Bridgestone and Michelin data charts below.

My 2000 has G rated with a 10,500 front axle. I installed BFG's and am happy with those, but will go Michelin or Bridgestone for our next set....which will be soon. If you take them off before they are 6 years old, you should ask for a credit. They will get resold as used for $150 or more to a trucker

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Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 36' FDS 72232 Our PhotosWe live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, me and you - hand in hand.

I am getting new tires in June, current tire is 275/70/22.5 Firestone and I am going to same size in Michelin. Current tires have H rating but Michelin has J rating. Am I setting myself up for problems? I assume a harder ride, anything else? Would I be better to go to 275/80/22.5 for G load rating?

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Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 36' FDS 72232 Our PhotosWe live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, me and you - hand in hand.

I am getting new tires in June, current tire is 275/70/22.5 Firestone and I am going to same size in Michelin. Current tires have H rating but Michelin has J rating. Am I setting myself up for problems? I assume a harder ride, anything else? Would I be better to go to 275/80/22.5 for G load rating?

275/70R22.5 LRH is your original size? It is 2 inches shorter than the 275/80R22.5.

IMO no need to go up in load range unless you are overloading your tires, your axle can carry more than your OE tires (highly unlikely). You cannot reduce air pressure, it is the same size tire. No advantage that I can see from the limited info I have.

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Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 36' FDS 72232 Our PhotosWe live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, me and you - hand in hand.

A friend of mine who owns a 2001 Monaco Dynasty had the 295 75 22.5 on it just changed to the 295 80 22.5 Toyos M144. I would go with the M144 Toyo's 295 80 22.5 16 ply instead of the Michelins and keep 3 grand in my pocket. See the chart for the difference of size

Watch the Date Code on New tires! Have my 3rd set of Michelin's on order!
1st. set came in 1.25 years old! Sent them back. 2nd set was older yet, dealer turned them back before I seen them. Waiting now for fresh set right from Michelin.
Dealer has been great. They say warehouse will not check Date Code for them, order and return.

My MH sticker calls for 275/70/22.5 G load rating. Michelin doesn’t make this size tire in G rating, it only comes as J rating. I have enough clearance to go to 275/80/22.5 G rating but that would change RPM/MPH rating because of difference in revolutions per mile. Which would be worse, J rating or RPM/MPH change?

A friend of mine who owns a 2001 Monaco Dynasty had the 295 75 22.5 on it just changed to the 295 80 22.5 Toyos M144. I would go with the M144 Toyo's 295 80 22.5 16 ply instead of the Michelins and keep 3 grand in my pocket. See the chart for the difference of size

Now you know more than many tire salespeople regarding calculating size.

Enjoy!!

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Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 36' FDS 72232 Our PhotosWe live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, me and you - hand in hand.